Traction-lug



J. S. HENSEL.

TRACTION LUG. APPLICATION FILED APR.25, 1919.

1,327,867. Patented Jail. 13, 1920.

WITNESS l LJZEITOR v I M ZZZ v ATTORNEYS JOHN s. HENSEL, or srnvnivs POINT, iscons n.

rnAoTIoN-Lud.

To all whom it may concern: e 7 Be it known that 1, JOHN S- HENsnL, a

citizen of the United States, and residentv of Stevens Point, in the county of Portage and State, of Wisconsin, have invented certain new and useful Improvements in Traction-Lugs; and-I do hereby declare that the following is a full, clear, and exact description thereof. This invention pertains to new and useful improvements in road gripping devices for tractor wheels and the wheels of motordriven vehicles. I 1

Under certain conditions some sort of lutely necessary for tractor wheels and the like to procure tractiomlwhile at other ti1nes,:

for instance when the machine is traveling over a hard roadsurface, anysupplemental traction devices are unnecessary. 1T herefore my invention is designed primarily for easy and quick attachment to or detachment from a tractor wheel. I

An additional object of the invention is to provide a traction device which can be inexpensively manufactured from ordinary stock angle bars. 7 v

A still further object is to increase the efficiency and otherwise improve the structure of devices of this character.

l/Vith these general objects in view, the invention resides more particularly in the novel combination, arrangement and formation of parts which will be hereinafter described and claimed.

In the accompanying drawing: I I

Figure 1 represents a side elevational view of a portion of .a tractor wheel having one of my improved lugs or calks secured thereon.

Fig. 2 is a plan View of the parts shown in Fig. 1. V

Fig. 3 is a view taken substantially transversely of the wheel rim on the plane of the traction devices may be used if suflicient gripping can be obtained thereby, or a plurality may be used and spaced equal dis tances about the wheel rim. Likewise the individual members may be cast or formed as shown in the present application of short TED ATENT, A

Specification of Letters Batent. 1 Jan, 13, Application filed April 25, 1919. seriain eaaiioo. i i v invention without departing from or sacrificingfany of the features thereof.

In the illustrated embodiment of my vention. the same mou'nted upon a portion of a tractor, Whee1.l,l and sin e cho hey a ground engaging devices are similar, the de-j scriptlon of the constructlon and use of one will; be suflicientl' I pr pa iit ge W e rim -1 forthe 'rjeceptionof a traction device or'calk, the opposite edges thereof are providedjwith notches 3 and 2, thefifirst Ila-mednotch being somewhat in advance of the notch" 2. Theintermediate portion of the. a.

rim in a diagonal plane con e ti g a similar ends of the notches, is Providedwith an Opening 4, I

- Asv hereinbefclie mention th k i? i the orm of an angl -than t e ang of which is adap eclxtc lie i rfiush; e gag ment with the outer face'of the wheel'rim, the other flange 7 forming the road gripping element of the device. When disposed on the wheel rim the bar is positioned at a" slight angle as shown in Fig. 2.

The ends of the flange 6 extend beyond the I adjacent ends of the other flange 7 and one is bent laterally in a direction opposite to the extension of the flange 7 to provide a lug 8 for cooperation with said notch 2. The

opposite end of the flange 6 extends a greater distance beyond the flange 7 than the last mentioned end of the former and is bent intohook-shape as at 9. The bight of the hook is engaged in said notch 3, the free end portion thereof being in contact with h the inner surface of the wheel rim 1. The intermediate portion of the flange 6 is provided with transverse cuts 10, the material between which is-bent laterally in the same direction as the lug 8 to form an attaching arm 11. This arm is extended through the opening 4 and has its opposite sides notched as at 12 to provide ahead 13.

The notches 12 and the consequent head 13 form one element of a lock, the other element of which consists of a sliding latch plate 1 1 having one end bifurcated, the furcations 15 thereof being disposable in said notchcs 12. The latch plate is carried by the wheel rim 1, it being slidably secured to the inner surface thereof by means of a bolt or the like 16, said plate having a slot 17 receiving the same. The end of the plate opposite the furcations 15'is bent laterally to construct a finger piece 18 whereby this lock element is readily shiftable.

In attaching the angle strip to the surface of the wheel rim 1, the hook 9 is engaged .with one edge and located in said notch 8,

the other end of the bar being slightly 'ele vated with respect to the rim.- Upon the ositioning of the hook 9 in the notch 3, t is raised end of the bar may be lowered to allow the attaching arm 11 to be projected through the opening 4, and the lug 8 seated in the notch 2. Now when the latch plate 14 is shifted to engage the furcations 15' -bar disposed substantially transversely of the rim and having one flange in substantially flush engagement with the face of the latter, the other flange being extended approximately at right-angles to the rim, the

'first mentioned flange intermediate its ends being provided with a pair of transverse shts, the material of the flange between said slits being bent in a direction opposite the second mentioned flange to provide an attaching arm, said arm being disposed through said wheel rim opening, and means on the inside of said rim for detachable engagement with said arm.

The combination with a wheel rim having' a notch in each edge and an opening intermediate said notches, of a traction device comprising a ground engaging member positioned substantially transverselyof the rim, a lug on each end portion of the member and disposed in said notches, an arm extended from the intermediate portion of the member and disposed through said openwith said arm to hold the member engaged with the rim.

3. The combination with a wheel rimhaving a notch in one edge, of a traction device comprising a ground engaging member positioned substantially transversely of the rim, a hook formed on one end of the'member to engage one edge of the rim, a lug on the other end of the member to seat in said notch, and means for securing the intermediate portion of the member to the rim.

In testimony that I claim the-foregoing I have hereunto set my hand at Stevens Point, in the county of Portage and State of Wisconsin. 7, I v a JOHN S.'IIENSEL.

mg, and means for detachable engagement. 

